Sash balance



Feb. 27; 1940. I L.H|RSH 2,191,959

. I SASH BALANCE Filed Feb. '7, 19:59-

Hf 3 v I INVENTOR.

ATTORNEYS Patented Feb. 27, 1940 UNITED stares PATENT QFFECE 1 Claim.

This invention relates to window hardware, and more especially to sashbalances of the spring type for the supporting of window sash andholding them in partially opened and closed positions.

An object of the invention is to provide a simple, practical andinexpensive device of the character described.

Another object is to provide an improved spring type sash balance havingsimplified construction and improved operating characteristics.

A further object is to provide a sash balance adapted for the operationof two sash and one that may be easily installed and requiring a minimumof space.

Other objects and advantages will appear and be brought out more fullyin the following specification, reference being had to the accompanyingdrawing, wherein 1 Fig. l is an elevation view of an embodiment of myinvention with the cover plate removed.

Fig. 2 is a side View of the same mounted in a window jamb and showing aportion of one of the sash, and

Fig. 3 is a sectional view taken along the line 33 of Fig. 1. I

Referring more particularly to the drawing, I show a sash balancecomprising a mounting plate 5, preferably of cast iron or other suitablematerial, having a lower flange portion 6 and an upper curved flangeportion 1. Plate is provided with a pair of posts. 8, preferably formedintegrally therewith and adapted to support and secure a flanged coverplate 9 by use of screws l0. Plate 9 is secured by screws II to thewindow jamb l2 which is suitably recessed to admit the sash balancetherein.

A pair of hollow studs I3 are secured to member 5 in any suitable manneror formed integrally therewith and provide bearings for a pair of hubsl4. Posts l3 each have a cut out portion l5 adapted to admit one end ofa spring IS, the other end of which is secured to a flange 11 formedwithin hub 14. A steel ribbon l8 has one end carried several timesaround each hub 14 and suitably secured thereto, and flange 6 isprovided with a pair of out out portions l9 whereby the ribbons may bepassed therethrough, the ribbons each being secured to a hook 20 and Thewindow jamb i2 is provided with a sloping cut out portion 22 adjacentcut outlfi to although they may be raised and lowered and held inintermediate positions by the springs 16 which substantiallycounterbalance the weight of the sash.

By my novel arrangement of the quarter turn in the ribbons IS, the sashbalance may be mounted flat in the jamb l2 thus requiring a minimum ofspace and permitting the use of steel ribbons I 8, being a moresatisfactory construction than the use of cables which are subject tobreakage under constant use.

Itwill' be further clear that my sash balance constructed as hereinabovedescribed is of greater simplicity than heretofore known, comprisingessentially two casing members, that is plate 5 and cover 9, the latterbeing readily removable 25 if necessary for adjustment or lubrication ofthe moving parts without disturbing the position of plate 5 in thewindow jamb.

Having described my invention, what I claim A sash balance as described,comprising a base plate having a lateral flange at each end, a coverplate resting on said flanges and extending beyond the same and formingsecuring means,

said cover plate having inwardly turned flanges at its sides extendingover the side edges of the base plate, posts carried by the base plateintermediate the ends thereof and extending out flush with the flanges,screws passing through the cover plate and screwed into said postsforming 40 a closed housing, studs carried by the base plate above andbelow the posts, a hub rotatably mounted on each stud, a coil springwithin each hub and having one end secured thereto and the other endsecured to the stud, and ribbons secured to the hub and wound thereonand the free ends passing downwardly from opposite sides of the hubsthrough openings in the lower flange of the base plate.

suitably secured to the lower portion of the LEO rrrasn. 5o s'ash2l.

